Fuji Electric FRENIC-Ace series - Description of Terminal Functions (Main Circuit Terminal)

2.2 Wiring
2-38
[ 4 ] Description of terminal functions (main circuit terminal)
Classifi-
cation
Terminal symbol Terminal name Specification
Main circuit
L1/R, L2/S, L3/T Main power input Terminals to connect Three-phase power source.
L1/L, L2/N Main power input Terminals to connect Single-phase power source.
U, V, W Inverter output Terminals to connect Three-phase motors.
P (+), P1
For direct current
reactor
connection
Terminals to connect DC reactor (DCR) for power factor
enhancement.
It must be connected in the following cases:
ND mode: Types FRN0139E2■-4 or above.
HD/HND mode: Types FRN0168E2■-4 or above.
HHD mode: Types FRN0203E2■-4 or above.
P (+), N (-)
For direct current
bus connection
Terminals to connect direct current intermediate circuit of
other inverters and PWM converters.
P (+), DB
For braking
resistor
connection
Terminals to connect a braking resistor (optional). Wiring
length: Below 5 meters.
(Types FRN0115E2■-2/FRN0072E2■-4/
FRN0011E2■-7 or below)
z
G
For inverter
chassis (case)
grounding
Grounding terminal for inverter chassis (case).
R0, T0
Auxiliary power
input for control
circuit
When it is desired to retain the alarm signal for the activation
of the protective function even inverter main power supply
shut off or when continuous display of the keypad is desired,
connect this terminal to the power supply.
(Types FRN0088E2■-4/FRN0059E2■-4 or above）
R1, T1
Auxiliary power
input for fan
Ordinarily, these terminals do not need to be connected.
Connect these terminals to AC power supply when
operating with direct current power input (such as in
combination with PWM converters).
(Types FRN0203E2■-4 or above）
Follow the sequence below when wiring.
(1) Inverter ground terminal (
z
G)
(2) Inverter output terminals (U, V, W), motor ground terminal (
z
G)
(3) Direct current reactor connection terminals (P1, P(+))*
(4) Braking resistor connection terminals (P(+), DB)*
(5) Direct current bus connection terminals(P(+), N(-))*
(6) Main power supply input terminals (L1/R, L2/S, L3/T) or (L1/L, L2/N)
(7) Auxiliary power input for control circuit (R0,T0) *
*: Connect if necessary.
Connect in the order (1), (2), (6), (3), (4), (5), (7) for the following models.
FRN0010 to 0020E2S-2□, FRN0002 to 0012E2S-4□, FRN0008 to 0011E2S-7□
(1) Main power source input terminals L1/R, L2/S, L3/T (Three-phase input) or L1/L, L2/N (Single-phase
input)
Connect the Three-phase power source for Three-phase input model.Connect the Single-phase power source for
Single-phase input model.
1) For safety, confirm that the circuit breaker (MCCB) or the magnetic contactor (MC) is OFF prior to wiring the
power lines.
2) Connect the power lines (L1/R, L2/S, L3/T) or (L1/L, L2/N) to MCCB or residual-current-operated protective
device (RCD)/ the earth leakage breaker (ELCB)*, or connect via MC if necessary. The phase sequence of
the power lines and the inverter do not need to be matched.
*: With overcurrent protection